.book .summary {
    position: absolute;
    top: 0px;
    right: -4px;
    left: 0px;
    bottom: 0px;

    box-shadow: -1px 0px 5px rgba(196, 205, 212, 0.8) inset;

    h1 {
        margin: 10px;
        font-size: 16px;
        font-weight: 300;
        text-align: center;
    }

    hr {
        border-color: rgba(196, 205, 212, 1);
        margin: 0px;
        box-shadow: 0px -1px #fff;
    }

    .inner {
        position: absolute;
        top: 38px;
        bottom: 0px;
        right: 0px;
        left: 0px;
        overflow-y: auto;
    }

    .trash {
        position: absolute;

        bottom: 8px;
        right: 8px;
        left: 8px;

        display: none;

        padding: 10px;
        text-align: center;
        color: @summary-color;
        border: 2px dashed @summary-color;

        .transition(border-color 400ms ease);

        &.dragover {
            border-color: darken(@summary-color, 20%);
        }
    }

    &.with-trash {
        .inner {
            bottom: 60px;
        }

        .trash {
            display: block;
        }
    }

    .articles {
        margin: 0px;
        padding: 0px;

        list-style: none;

        .article {
            margin: 0px;
            padding: 0px;
            
            position: relative;
            cursor: pointer;

            &.active {
                > .chapter-title, > .chapter-title:hover {
                    background: rgba(196, 205, 212, 0.35);
                    border-top-color: rgba(196, 205, 212, 1);
                    border-bottom-color: rgba(196, 205, 212, 1);
                }
            }

            &.modified {
                > .chapter-title {
                    border-left-color: @brand-warning !important;
                }
            }

            &.move,
            &.active.move {
                position: fixed;
                z-index: 100000;
                pointer-events:none;
                background: #fff;
                border: 1px solid @book-color;
                width: 180px;

                .chapter-articles {
                    display: none;
                }

                * {
                    pointer-events:none;
                }
            }

            &.dragover {
                border-top: 2px solid @brand-success;
            }

            .chapter-title {
                padding: 8px 10px;
                display: block;
                border-left: 4px solid transparent;
                border-top: 1px solid transparent;
                border-bottom: 1px solid transparent;

                &:hover {
                    background: rgba(196, 205, 212, 0.2);
                    border-top-color: rgba(196, 205, 212, 0.4);
                    border-bottom-color: rgba(196, 205, 212, 0.4);
                }
            }

            .chapter-actions {
                position:absolute;

                right: 6px;
                top: 0px;
                height: 36px;
                z-index: 1;

                line-height: 36px;
                .opacity(0);
                .transition(opacity 100ms ease);

                .action {
                    color: @summary-color;
                    .opacity(0.6);
                    margin: 0px 2px;

                    &:hover {
                        text-decoration: none;
                        .opacity(1);
                    }
                }
            }

            &:hover {
                > .chapter-actions {
                    .opacity(1);
                }
            }
        }
    }
}